I am saying that David declared he would see his child again after David died.I am saying nothing. Paul very clearly says, "neither having done any good or evil". So, by "evil" we must understand "sin" Both passages say that there is a time, only known to God, that babies, do not sin before they actually commit sin. You are assuming that David's child was "elect"? Based on what?
2 Samuel 12:23
"But now that the baby is dead, why should I fast? I can't bring him back to life. Someday I will go to him, but he cannot come back to me."